First of all this blog is not fair. Kanpur-Jhansi-Guna is shortest route for Sabarmati and GKP-Okha, ST-MZP Express.
Gwalior-Etawah is unelectrified with slow MPS in Gwalior-Guna section,
while Sabarmati existing route Jhansi-Kanpur is about to be double BG, with mps of 110-120kmph, 130 once doubling is completed. Jhansi-Bina-Gun are already double BG and 130kmph capacity.
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more... so discussion on this is really pointless.